von schmidt



UNITED STATES PATENT OFFICE.

A. w. von SCHMIDT AND J. H. voN SCHMIDT,Y oE WASHINGTON, DISTRICToiiooLuMiaiAQ CENTRIFUGAL PUMP.

To aZZ whom Z may concern: Be it known that we, ALLEXEY W. voN SCHMIDTand JULIUS H. voN SCHMIDT', of Washington city and District of Columbia,have invented `a new and useful Machine for Pumping Vater, &c., which wecall the Rotary Siphon-Pump, and do hereby declare that the followiiigisa full, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which(Figure 1) -is a sectional view; (Fig. 2) a top view (with the lid off)ofthe inside, vshowing the position of the pipes &c,; (Fig. 3)represents an external view of said pump, with the valves in `the Siphonand supply pipes, the same letters indicating the saine parts in all thefigures. l

The nature of our invention consists 1st, in the shape and arrangementofthe case, as shown in Fig. 1, letter (64); 2nd, in throwing the waterin a tangent line; 3rd, the manner of letting the water into the casing(or Wheel) between the center and periphery of said wheel as representedin (Figs. 1 and 2) letter (CZ), 4th the arrangement of the siplion pipe(e) at the end of the discharge pipe (fw Fig. 3); 5th, the arrang mentof the valves &c., as represented.

Letter (a) (Fi s. 1, 2, and 3) represents the outside casing.

(Z9) are flanges, by which t-he upper and lower parts of the casing areto be fastened together by bolts (c) as shown in (Figs. 1 and 3).

(cZ) (Figs. 1, 2, and 3,) represents the supply pipe; (e)' (Figs. 2and3) the discharge pipe, through which the water is discharged fromwheel (R)-as shown in (W) Fig. 2, and by arrows.

(f) (Figs. 1 and 3,) represent a bowl, for the purpose of containingwater, placed arround the shaft (it) (as represented in Fig. 3) toprevent any leakage of air through the stuffing-box (g) (Fig. l).

(l1.) (Figs. 1, 2, and 3,) represents the main shaft of the wheel; Figs.1, and 3, is a screw, upon which the end of the main shaft (h) turns;(j) (Figs. 1, and 2,) is the hub of wheel (R).

(K) Figs. 1, and 2,) are arms to which the circular buckets (Z) arefastened, as represent-ed in (Figs. 1 and 2).

(m) (Fig. 1,) is a stop-cock (or valve) by which the pump is to beprimed, and also serves for the dischargek of air out of the (Fig. V3)is a chamber for the valve1(p) (o) being the discharge pipe valve, and(p) the supply pipe valve; (g) (Fig. 3) springs for wheel, in case anyaccumulates therein; I r

the purpose of closing the valves (o) and (p) when not in operation.

(t) (Figs. 1 and 3) are anges to connect 'n the Suction pipe (CZ) withitslower part, (m)

(as represented in the annexed drawings). i (u) (Figs. 2 and 3) areflanges., Connect ing the discharge or tangent pipe (fw) to the n pipek(e) which vcontinues downward (when the pump is used 'for pumping'ordrawing Water alone, but upward, when used for the double purpose ofdrawingV and forcing the water t-oy any given height. flliese flanges orjoints A,may be put together in any of the known ways. The tangent pipe(fw) is to be cast with the cases in the manner represented in (w) (Fig.2), another pipe arranged ina Similar manner may be placed oppositetothe tangentpipe (w), running in an oppositedirection, kby whicharrangements the friction of the main shaft is equalizedfand a doublequantity of water discharged. In very large pumps two, three, or morepipes may be arranged in a similar Inannerto the yone represented in theannexed drawing.

WTL@ Operation of the Pump.

To enable others skilled in the art to make and use our invention, wewill proceed toV ldescribe its construction and operation.

We construct the case (a) of the pump in the form represented in theannexedv drawings, being larger at the periphery than any part near thecenter.v The buckets (Z, Z, Z, &c), which are six in number, more orless, and working close to the ,form of the inside casing (a) arestrongly attached -to the shaft (ZL), which shaft (h) turns upon a screw(z') in bottom of case (a) for the purpose of regulating the height ofthe buckets (Z, Z, Z, &c.) in the case (a). At the top, the shaft (h)works in a stuffing-box (g) which stuiing box is surroundedfby a bowl(f) n Vcontaining water, in order Vto render the said stufling boXperfectly ai'rl tight.

bThe raperture o-f the suction vpipe` through which the water istakeninto the K Y wheel case (a) --we placebetween the'shaft (h) and theperiphery; and near t-he tangential pipe (w). This position of theaforesaid aperture, (and as shown in the annexed* drawings), welconsider of the greatest' utility-,being naar the tangential with thedirect action of the buckets (Z, Z, Z,Y

&c.) out of the tangential pipe (fw) in the shortest possible linebywhich. device this pump .is rendered more efficient than anyI We connecta Siphon! pipe (e)` 'to the tangential pipe (w) andZ extend it downwardany required distance,y Vby which arrangement the water in descendi ingthrough the pipe (e) counterbalancesl the rising column of water inthesuction pipe (cl) and only leaves the weight of water to be raised,which is equal to the differ- V 'ence between the level of the water tobe-l raised, and the water level where the Siphon pipe (e) dischargesits water, (as would be known to be in use.

the case in a vessel &c.) for which purpose vthis pump is betteradaptedthan any other L 'Y l now in` use.

This pump can work, either vertically or horizontally, and by changingthe direction ofthe siphon pipe (e) and placing its end l u turn of anywaterthrough the Siphon pipe (e) and also for keeping the priming.

In using this pump in combination with the Siphon pipe (e) as for.vessels &c.the Siphon pipe (e) can be made with a bend (where thelconnection takes place with the tangential pipe (10)' extending"sufficiently upward (to prevent the pump'case (a) from spilling itspriming through the siphon pipe (e), in case' the lower end of 4saidpipe should be exposed to air when not in operation)-and then downwardas shown in the drawings.

The pump is primedin the usual manner, or by a funnel (e) and stop cock(m) (Fig. 1,) and continues its operation of throwing or forcing waterby the revolution of the bucket-wheel VHaving thus fully described theoperation and naturev of our invention, we do not claim as our inventiona rotary pump as they are now commonly constructed with the wheelworking out of center in the case, and letting the water into the caseat the center, and discharging the water at right angles to theperiphery; but

What we do claim as our invention and desire to secure by LettersPatent, is

Taking the water in between the center of the wheel and the peripherynear to the tangential discharge pipe, as herein described andrepresented in the drawings in Figs. 1 and 2 letter (cl), and this weclaim in combination with the descending discharge pipe in the mannerand for the purpose4 as herein mentioned and illustrated by the anneXeddrawings.

ALLEXEY w. VON SCHMIDT. t JULrUs H. VON SCHMIDT.v

Witnesses: T. C. DoNN,

JOHN W. DEXTER.

